package com.atguigu.springboot.componet;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginHandlerInterceptor implements HandlerInterceptor {
	//目标方法执行前
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
		Object user = request.getSession().getAttribute("loginuser");
		if(user == null){
			request.setAttribute("msg","没有权限,请先登录!");
			request.getRequestDispatcher("/index").forward(request,response);
			return false;
		}else{
			return true;
		}
	}
	
	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
	
	}
	
	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
	
	}
}
